Portable electric heater.



r'. L. DYER.

PORTABLE ELEGTMC HEATER.

APPLICATION FILED 0 Patented Ap1".2, 1912.

i UNITED sTATEs PATENT onirica.

FRANK L. `DYER, F MNTCLAIR, NEW JERSEY.

PORTABLE ELECTRIC HEATER. l

Specification. of Letters Patent.

Patented Apr. 2, 1912.

AApplication tiled October 7, 1910. Serial No. 585,738.

State of New Jersey, have invented a. cer-` tain new and useful Portable Electric Heater, of which the following is a description.

My invention relates to electric heaters, and is an improvement upon the device for which U. S. Let-ters Patent No. 969,849, gortable electric heater, was granted to me eptember 13, 1910. The patented invention comprised a compact device suitable to be easily put in ones pocket and connected to any suitable source of electric current when it was desired to heat water or any desired substance. The device referred to consisted of a chamber or,casingv for inclosing in compact form vthe plug and electrical connections when not in use, the hea-ter being integral with the casing. When such a device is used, 'for example, for heating water in a small vessel, a disadvantage has been noted in that a considerable amount of the water is dis laced. My present invention overcomes t is difficulty by making the heater of sufficiently -small size to displace but little water when placediin a glass or other receptacle, the Iheater being adapted when not 1n use to be retained in compact form in axial alinement or in contact with the casing in which .the electrical connections from the heater are adapted to be coiled when not in use. The heater maybe either entirely separable from the casing or joinedvthereto in such a way that it may be moved therefrom to a position in lwhich the heater may be lowered `intoa fluid to be heated, while the casing remains above the surface of the same.

The object of my invention' is to provide an eicient device of the character referred to, and other objects 'of my invention reside in the construction of `arts and combinations of elements'as wil -appear more fully inthe following specification and appended claims.

In order 'that a clearer understanding of by directed to the accompanym drawings forming part of this speci cation, '1n whicl1 Fi re 1 represents a side elevation 4of one Vorm'of my device, certain parts being shown in section; Fig. 2 represents a. section my invention may be had, attention is hereon line 2-2 of Fig. 1, certain parts being shown in side elevation; Fig. 3 represents 8 horizontal section on line 3-3 of Fig. 1, the 'lug and coil connections being shown in p an; Fig. 4 represents a central vertical certain parts being shown in side elevation; and Fig. 5 is a horizontal section taken on line 5`-5 of Fig. 4, the plug and coil connections being shown in plan.

Referring more particularly to Figs. 1 and 2, the heater 1- is formed vof any suitabley material, preferably metal, which should be a good conductor of heat. Thejheater is hollow andcontains thepheating coil 2, the space between Vthe convolutions of the coil and the heater surface bein filled with any suitable insulating materia ,fas shownat 4 in Fig. 4. The two ends of the heating 'coil 2 extend into tubular arms or conduits 5 and 6 which are pivotally connected to the casing or chamberv 7 as shown -in Fig. 2 at 8 and 9.' The insulated conductors 1,0 and 11 extending from tubular arms 5 andv 6 into the interior of casing 7 are inclosed togetherA within cord 12 whlch, together'. with lug 13 `secured to the other end of the cord, is adapted to be compactly arranged within casing 7 when theheater isnot in use. The arms' or conduits 5 and 6 are pivotally connected to the casing 7 in any suitable man. ner, as, for instance, in the manner 'in` dicated in the drawings.-v The arms 5 rand 6 are preferablyof such length that when the device is not in use the heater may be swung into the position, shown in full lines in Fig. 1,'in which the heater forms a top or cover for the open upper end of casing 7, in which position the heater and casing are in axial alinement with each other, and the device may easily be carried in the pocket or among the belongings of the user. When it is desired to use the device, the Aheater is simply swung about its pivots 8 180 degrees into the position shown in dotted lines in Fig. 1, the plug 13 and coil 12-being pulled out through the open end of casing 7 and the plug inserted into a lamp socket 0r otherwise connected with a suitable source -of current. In this position the casing 7 may be used as a handle and the heater l inserted in the receptacle 14 v containing water or other fluid l5 for heating the same, the casing 7 remaining above the level of the fluid. The casing 7 is. preferably formed,

section of a modified form of my device,

and 9 through an angle-of approximately lio as shown in4 Fig. 3, with the shoulders 16 and 17 against which the` arms 5 and 6 'may abut when the heater 1 is swung into the position shown in full lines in Fig. 1, in .which it is in-axial alinement with the casing 7 and forms a top for the same. It is obvious that any other form of stop might be used for positioning the heater in alinement with the casin when in non-operative position, and also t at the protecting conduits 5 and 6 might be omitted from the construction-'f in which case the conductors 10 and 11 extending from the two ends of heat-,.7 ing coil 2 would enter the casing 7 in the 15 through which the ends of heating coil 2, extend to connect with the flexible connec same manneras that shown, but would be unprotected by ri id tubing. A

In the formo my device illustratedl in Figs. 4 and 5, the heater 1 is slidable therefrom when it is desired to use the same. In .this case heater 1 may be formed with an elongated hollow tube 18 integral therewith lheater by friction in alinement with casing 7 and in contact therewith. .The casing may be provided with. acover 20 hinged as shown at 21 to casing 7, if desired. When it is desired 'to use this form of-my device, the heater is pulled awayl from the casing-tube 18 sliding through sleeve 19, cover 20 is opened and plug r13 and flexible conductor 12 extended ltherefrom. When one is through using the device, the-plug is dis- 45 connected from the source of' current, the' heater again shoved into the position shown in Fig. 4 in compact alinement with casing 7, conductor 12 is again coiled ywithin the casing, and the plug positioned therein and the cover closed.

` It is obvious that if desired some positive fastening means between heater 1 andvcasing 7 might be provided for securing the same in the relation shown in Fig. 4, in

which case sleeve 19 would be unnecessary.

lIt is also obvious that other departures from the specific construction illustrated might be made without departing from the spirit of l my invention.

Having now described my invention, what lI claim and desire to protect by Letters Pat-` ent is as follows y ,1. In a portable heater, the combination of a heater, a heating coil within the same, .a plugand connections between and joined tothe saine and said. coil, and a casing for inclosing said plug and connections when not in use, said heater being pivotally connected to said casing, substantially as described.

2. In a portable heater, the combination of a heater, a heating coil Within the same,

a plug and connections between and joined to the same andsaid coil, and a casing for inclosing said plug and connections when not in use, said heater being adapted to be retained in axial alinenient with said casing when` not in use and moved therefrom for use, substantially as described.

3. .In afportable heater, the combination of a heater, a heating coil within the same,I flexible electrical connections joined to said coil, a tubular casing for .compactly inclosing said connections when .not in' use, said heater and casing being constructed to -permit the compact adjustment and retention of the heater in axial alinement with said `casing when not in use, said heater being movable out 'of said position when it is topermitting movement of said heater away from said casing when said heater is to be used, substantially as described.

5. In a portable heater, the combination of a easing, a heater, a heating coil within lthe same, flexible electrical connections joined to said coil adapted to be inclosed within said casing when not in use, and means Aconnecting said heater to said casing permitting movement of said heater into position to form a cover for said casing when said heater is out of use, substantially j as described.

46. In a portable heater, the combi-nation of a casing, a heater, a heating coil within the same, exible electrical` connections joined to said coiladapted to be inclosed within said casing `when not in use, elongated hollow means of small cross-sectional area joining said heater to said casing and conducting means extending therethrough joining said heating coil to said connections, said hollow means beingpivoted to said -casing, substantially as described. l

7. In a portable heater, the combination of a casing, a heater, a heating coil within the saine, flexible electrical connections joined to said coil adapted to be' inclosed 4lio within said casing when not .in use, a pair of tubular arms connectedto saidfheater and pivoted to said casing, and? conducting means extending therethrough joining said heating coil to said connections, substantially as described. l

8. In a portable heater, the combination I of a heater, a heating coil' therein, flexible electrical connections extending therefrom, and means for retaining said heater and connections in compactA form' when not in use, and including a casing for inclosing the connections, said heater being movably connected to the said -casing and adapted to be moved relatively thereto for use, substan-I tially asl described.

9. In a portable ofv a heater, a heating coil Within the same, a plug and connections between and joined scribed. A p This specification 'slgned and witnessed j heater, the combination l to the lsame and said coil, anda casing A:for inclosing said plug and connect-lons when not in use, said'heater being-movably vcon- 15 nected to said casing, substantially as' dethis tlfdayl of September 1-9`1( )'.'jv FRANK DYER.4

Witnesses:

DYER SMITH, ANNA R. KLEHM.

Copies of this patent may be obtained for ve cents eaciifby addressing the Commissioner of Patents,

Washington, D. C. 

